Abbingdon Music Research AM-77 Reference Class - Manual (Page 15)

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R7. INPUTS 2-5: RCA inputs, for signal input of source equipment.
R8. SYNC connectors: for connection of more than one AM-77.
R9. RS232 option connector: to facilitate future upgrades*.
R10. Infra-Red Link: for connection of a wireline remote control.
R11. IEC power connector: for the connection of a mains power cable to the AM-77.
R12. POWER: rocker switch to power on/off mains electricity to the AM-77.
In the majority of audio systems, the AM-77 is most likely to be operated as a Pre-Main Amplifier: please inspect
the rear panel of the AM-77 to verify that the default settings (in bold) to enable the AM-77 to operate in this mode
are as follows:
- HIFI/PRO switch (R3) is set to ‘HiFi’ (set to left position)
- INT/POWER switch (R4) switch is set to ‘Int’ (set to right position)
- MODE switch (R5) is set to ‘LR’ (set to middle position)
* Please refer to Sections 3 - 5 for a more detailed explanation.